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Search Results: 1 - 10 of 1214 matches for " Zijun Sha "
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A Neuron Model with Dendritic Nonlinearity for Predicting the Influence of Overreaction in Shanghai Stock Market  [PDF]
Sha Zijun, Hu Lin
Chinese Studies (ChnStd) , 2015, DOI: 10.4236/chnstd.2015.41001
Abstract: On the basis of previous research, this study assembled trading data from January 2004 to October 2014 to verify the overreaction in Shanghai stock market. The influence of overreaction decreases with time from 2007 onwards and turns to disappear from 2011. The neuron model with dendritic nonlinearity (NMDN) proposed in this paper fits and predicts the variability of abnormal returns of ill-preforming and well-preforming stocks in the test period. This experiment demonstrates that NMDN possesses high computational ability and succeeds to predict trends in the influence of overreaction.
A Game Theoretic Approach for Analyzing the System of Incentives and Restraints Present in Chinese Financial Systems  [PDF]
Lin Hu, Fan Yang, Zijun Sha
Theoretical Economics Letters (TEL) , 2014, DOI: 10.4236/tel.2014.47066

Currently, the most important issue with respect to financial institutions is how to motivate staff without providing perverse incentives. For instance, with the implementation of a proper incentive system, staff will be motivated via their self-interest to create financial innovations to better price and hedge risk. However, this system must also be designed with checks and balances in mind because it is also very easy to institute a system in which perverse incentives drive individual behavior. In an effort to modernize the Chinese financial system, it is important to understand both the underlying mechanism by which people respond to incentives to better design compensation schemes that maximize innovation. Utilizing game theory, it is possible to analyze the interplay between these two drivers of human action. From this analysis it becomes possible to design better ways of compensating staff to curb undesirable behavior by those in the financial industry while still promoting innovation within the field.

Donaldson-Thomas theory of $[\mathbb{C}^2/\mathbb{Z}_{n+1}]\times \mathbb{P}^1$
Zijun Zhou
Mathematics , 2015,
Abstract: We study the relative orbifold Donaldson-Thomas theory of $[\mathbb{C}^2/\mathbb{Z}_{n+1}]\times \mathbb{P}^1$. We establish a correspondence between the DT theory relative to 3 fibers to quantum multiplication by divisors in the Hilbert scheme of points on $[\mathbb{C}^2/\mathbb{Z}_{n+1}]$. This determines the whole theory if a further nondegeneracy condition is assumed. The result can also be viewed as a crepant resolution correspondence to the DT theory of $\mathcal{A}_n\times \mathbb{P}^1$.
Relative Orbifold Donaldson-Thomas Theory and the Degeneration Formula
Zijun Zhou
Mathematics , 2015,
Abstract: We generalize the notion of expanded degenerations and pairs for a simple degeneration or smooth pair to the case of smooth Deligne-Mumford stacks. We then define stable quotients on the classifying stacks of expanded degenerations and pairs and prove the properness of their moduli's. On 3-dimensional smooth projective DM stacks this leads to a definition of relative Donaldson-Thomas invariants and the associated degeneration formula.
The Influence of Entrepreneurial Social Responsibility on the Strategic Decision-Making Process  [PDF]
Yanfei Sha
iBusiness (IB) , 2013, DOI: 10.4236/ib.2013.51B010
Abstract: Entrepreneurs manage enterprise strategic decision. Owing to low quality decision,entrepreneurs bring serious problems to the society. The corporate social responsibility has been rising, and it also has influenced the entrepreneurs' decision environment. This paper refines the deep influence factors of  strategic quality and analyzes the influence mechanism of entrepreneurial social responsibility on the strategic decision-making. The results show that high cognition and sense of entrepreneurial social responsibilitycan enhance the quality of enterprise strategic decision. So enterprise can get understanding and supporting from stakeholders.
Application of Moral Investment of Enterprise in Constructing Harmonious Society  [PDF]
Sha Yanfei
iBusiness (IB) , 2013, DOI: 10.4236/ib.2013.51B011
Abstract: The enterprise is the mainbody of the construction of harmonious society. The pivot to construct the harmonious society is to increase the moral investment.The moral investment should be operational and it can be done in three steps. The first step is to form the moral view. The second step is to make the decision on morality. The last step is to grip the moral carrier.
Bargaining Power of Suppliers and Buyers, and Accounting Conservatism—Evidence from Chinese Manufacturing Listed Companies  [PDF]
Ziqiang Zhao, Dixi Wu, Sha Sha
Journal of Financial Risk Management (JFRM) , 2015, DOI: 10.4236/jfrm.2015.41002
Abstract: Using the panel data of Chinese manufacturing listed companies from 2003 to 2012, this paper examines the effects of suppliers’ and franchisers’ (buyers’) bargaining power on accounting conservatism. The empirical research proves that there is an inverted U-shape relationship between suppliers’ bargaining power and conditional conservatism, with lower left wing and higher right wing. The relationship between franchisers’ (buyers’) bargaining power and conditional conservatism is not significant. On the contrary, there is a U-shape relationship between suppliers’, franchisers’ (buyers’) bargaining power and unconditional conservatism. The relationship between suppliers’ bargaining power and unconditional conservatism has higher left wing and lower right wing. Our research results explain how strong suppliers and franchisers (buyers) affect companies’ accounting practices in the Chinese context. In the meantime, our results provide support to the contracting explanation for accounting conservatism.
Asset Pricing with Relative Performance and Heterogeneous Agents  [PDF]
Ting Levy, Xiangbo Liu, Zijun Liu, Zhigang Qiu
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.25096
Abstract: This paper studies the impact of relative performance on portfolio choices and asset prices when fund managers differ in size and exogenous financial shocks. We find that with these heterogeneities, fund managers change their trading behaviors significantly.
IR and Raman Spectra Properties of Bi2O3-ZnO-B2O3-BaO Quaternary Glass System  [PDF]
Feng He, Zijun He, Junlin Xie, Yuhui Li
American Journal of Analytical Chemistry (AJAC) , 2014, DOI: 10.4236/ajac.2014.516121
Abstract: Among new low-melting-point glasses, bismuth ate glass is deemed to have the most potential as an environmentally friendly replacement for polluting Pb-containing glasses. Current studies of boro-bismuthate glasses focus on the structural influence of the additional oxide in the context of low-melting-point electronic sealing applications. In this study, the structure of quaternary Bi2O3- ZnO-B2O3-BaO glasses was investigated spectroscopic ally, with Fourier-transform-infrared (FT-IR) and Raman spectra recorded for glasses with different main oxide contents. Signals in the FT-IR are mainly observed around 500 cm﹣1, 720 cm﹣1, 840 cm﹣1, 980 - 1080 cm﹣1, and 1200 - 1500 cm﹣1, while the Raman scattering peaks are located at 130 cm﹣1, 390 cm﹣1, 575 cm﹣1, 920 cm﹣1, and 1250 cm﹣1. The glasses are mainly structured around [BO3] units and the numbers of [BiO6] and [BiO3] units increase with the Bi2O3 content increasing. Concurrently, the FT-IR absorption peaks associated with [BO4] units shift to lower wave numbers, indicating a loosening of the glass structure. However, as the B2O3 content is increased, the numbers of [BO3] and [BO4] units increase, while those of [BiO3] and [BiO6] units decrease, highlighting a densification of the glass structure. ZnO acts as a network modifier in these glasses.
The Influence of Social Rejection on Cognitive Control  [PDF]
Ting Wang, Hongmei Sha
Psychology (PSYCH) , 2018, DOI: 10.4236/psych.2018.97101
Abstract: Social exclusion has a broad effect on individuals, including basic cognitive function, emotion and behaviour. Studies using the Cyberball game showed that social exclusion influenced executive control. However, the effects of different paradigms on subjects are different. The present study aimed to explore the effect of social exclusion through the life-alone paradigm. Participants were required to complete a questionnaire, and then they randomly received fake feedback (lonely or happy) about their future social lives. To test the cognitive control of the two groups, event related potential (ERP) was recorded when participants completed a letter flanker task. The results showed that compared with included subjects, excluded subjects had a larger congruency effect and showed a smaller N2 component in both congruent and incongruent trials; additionally, they did not show a larger P3 effect in incongruent compared to congruent trials. These results indicated that social exclusion decreased subjects’ cognitive control ability, including conflict detection and response inhibition. Time-frequency results found that ERSP magnitudes of the alpha band were significantly smaller in incongruent than congruent trials for included participants, but this was not the case for excluded subjects. This finding suggested that excluded subjects might have no available resources to resolve conflict in incongruent trials. Further, compared to the ostracism paradigm, future rejection led to a decline in conflict detection ability.
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